///标示蓝牙服务特征值的配置属性的枚举类
enum CharacteristicInfo {
  broadcast,
  ///可读
  read,

  ///不回复写,ios平台如果设置不回复则写入后则不会进入写入结果的回调,android则即使设置了也会进入写入结果的回调
  writeNoResponse,

  ///可写
  write,

  ///通知
  notify,

  ///可靠通知
  indicate,

  ///签名写
  signedWrite,
  extendedProps,
  notifyEncryptionRequired,
  indicateEncryptionRequired
}